It works like a charm! Once I read about an extension on Chrome where you can browse the internet while Animal Crossing music played I just had to go and download it! But I was bummed that there was no such extension for Firefox until today! This extension has some features that the extension on Chrome didn't, music starts off where it was paused and has smooth transition for the music! I'm a bit sad that this extension doesn't have the option to make your own tunes of your town and music from previous Animal Crossing games as the Chrome one but no biggie. This is an awesome extension and I'm glad to be able to hear music to my favorite game! Thank you!